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5 papers · 2 filters
Caustics for Spherical Waves
Claudia de Rham, Hayato Motohashi
We study the development of caustics in shift-symmetric scalar field theories by focusing on simple waves with an -symmetry in an arbitrary number of space dimensions. We sh…
Geodesically complete BTZ-type solutions of Born-Infeld gravity
D. Bazeia, L. Losano, Gonzalo J. Olmo +1
We study Born-Infeld gravity coupled to a static, nonrotating electric field in dimensions and find exact analytical solutions. Two families of such solutions represent geode…
Nonsingular black holes in Palatini extensions of General Relativity
Gonzalo J. Olmo
An introduction to extended theories of gravity formulated in metric-affine (or Palatini) spaces is presented. Focusing on spherically symmetric configurations with electric fields…
Quantum dress for a naked singularity
Marc Casals, Alessandro Fabbri, Cristián Martínez +1
We investigate semiclassical backreaction on a conical naked singularity space-time with a negative cosmological constant in (2+1)-dimensions. In particular, we calculate the renor…
Impact of curvature divergences on physical observers in a wormhole space-time with horizons
Gonzalo J. Olmo, D. Rubiera-Garcia, A. Sanchez-Puente
The impact of curvature divergences on physical observers in a black hole space-time which, nonetheless, is geodesically complete is investigated. This space-time is an exact solut…